NOAA National Water Model Reanalysis Data at RENCI

This data release provides the historic streamflow simulations from versions 1.2, 2.0, and 2.1 of the National Water Model re-structured for time series extraction. The data is hosted on a distributed set of THREDDS Data Servers and is accessible via OPeNDAP at the following URLs:

Version 1.2
(https://thredds.hydroshare.org/thredds/catalog/nwm/retrospective/catalog.html?dataset=NWM_Retrospective/nwm_retro_full.ncml)
- Spans 1993-01-01 00:00:00 to 2017-12-31 23:00:00
- Contains 219,144 hourly time steps for
- 2,729,077 NHD reaches

Version 2.0
(https://thredds.hydroshare.org/thredds/catalog/nwm/retrospective/catalog.html?dataset=NWM_Retrospective/nwm_v2_retro_full.ncml)
- Spans 1993-01-01 00:00:00 to 2018-12-31 00:00:00
- Contains 227,904 hourly time steps for
- 2,729,076 NHD reaches

Version 2.1
(https://cida.usgs.gov/thredds/catalog/demo/morethredds/nwm/nwm_v21_retro_full.ncml)
- Spans 1979-02-02 18:00:00 to 2020-12-31 00:00:00
- Contains 367,439 hourly time steps for
- 2,776,738 NHD reaches

The `nwmTools` R package provides easier interaction with the OPeNDAP resources. Package documentation can be found here (https://mikejohnson51.github.io/nwmTools/) and the GitHub repository here (https://github.com/mikejohnson51/nwmTools).

This effort is supported by the Consortium of Universities for the Advancement of Hydrologic Science, Inc. under the HydroInformatics Fellowship.

Current Publication:

J.M. Johnson, David L. Blodgett, Keith C. Clarke, Jon Pollack. (2020). "Restructuring and serving web-accessible streamflow data from the NOAA National Water Model historic simulations". _Nature Scienfic Data_.